from info import redis_store, constants
from flask import render_template, session, request, jsonify
from flask import current_app

from info.models import User, News, Category
from info.modules import index_blu
from info.utils.response_code import RET




@index_blu.route("/news_list")
def news_list():
    """
    返回首页新闻数据
    :return:
    """
    # 1.获取新闻数据
    cid =  request.args.get("cid","1")
    page = request.args.get("page","1")
    per_page = request.args.get("per_page","10")

    #2.检验参数
    try:
        cid = int(cid)
        page = int(page)
        per_page = int(per_page)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno = RET.PARAMERR,errmsg = "参数错误")

    filters = []
    if cid !=  1 : #查询不是最新的数据
        #添加查询条件
        filters.append(News.category_id == cid)

    #3.查询数据
    try:
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page,per_page,False)
    except Exception as  e:
        current_app.logger.error(e)
        return jsonify(errno = RET.DBERR,errmsg = "参数错误")

    #取到当前页的数据
    news_model_list = paginate.items #模型对象列表
    total_page = paginate.pages
    current_page = paginate.page

    #         将模型对象列表转换为字典列表
    new_dict_li = []
    for news in news_model_list:
        new_dict_li.append(news.to_basic_dict())



    data = {
        "total_page":total_page,
        "current_page":current_page,
        "new_dict_li" :  new_dict_li
    }

    return jsonify(errno = RET.OK,errmsg = "OK" ,data = data)



@index_blu.route('/')
def index():
    """
    显示首页
    1.如果用户已经登录,将当前登录用户的数据传到模板中,供模板显示
    :return:
    """
    # 取到user_id
    user_id = session.get("user_id",None)
    user = None

    if user_id:
    #     尝试查询用户的模型
        try:
            user = User.query.get(user_id)
        except Exception as e:
            current_app.logger.error(e)

    # 右侧的新闻排行的逻辑
    news_list= []
    try:
        news_list = News.query.order_by(News.clicks.desc()).limit(constants.CLICK_RANK_MAX_NEWS)
    except Exception as e:
        current_app.logger.error(e)

    # 定义一个空的字典列表 ,里面装的就是字典
    print(news_list)
    news_dict_li = []
    # 遍历对象列表.将对象的字典添加到字典列表中
    for news in news_list:
        news_dict_li.append(news.to_basic_dict())


    # 查询分类数据,通过模板的形式渲染出来
    categories = Category.query.all()

    category_li = []
    for category in categories:
        category_li.append(category.to_dict())



    data = {
        "user":user.to_dict() if user else None,
        "news_dict_li":news_dict_li,
        "category_li":category_li
    }

    return render_template('news/index.html',data = data)


@index_blu.route('/favicon.ico')
def favicon():
    return current_app.send_static_file('news/favicon.ico')
